Table 1: Patient characteristics.

VariableValue

Initial encounter (day 1)
Pulse97/minute
Respiratory rate25/minute
Blood pressure106/67 mmHg
Oxygen saturation
Room air87%
1-2 L oxygen91%
Second encounter (day 3)
Pulse170/minute
Respiratory rate50/minute
Blood pressure87/55 mmHg
Temperature100.5 F
Oxygen saturation
Room air48%
100% oxygen58%
Laboratory data
WBC27.8 × 109/L
Neutrophil73%
Hemoglobin16.2 g/dl
Hematocrit48.8%
Platelets76,000 × 109/L
Sodium136 mEq/L
Potassium5.1 mEq/L
Chloride98 mEq/L
Bicarbonate13 mEq/L
BUN22 mg/dl
Creatinine2.04 mg/dl
Anion Gap25 mEq/L
D-dimer3410 mg/L
Troponin0.5 ng/mL
BNP129 pg/mL
ESR>120 mm/hr
CRP28.20 mg/L
ABG on 100% oxygen
pH7.39
pO235 mmHg
pCO226 mmHg

ABG: arterial blood gas.